Antifriction-bearing.



l PATENT oEEIoE.

, UNITED sTATEs ToBIAs Fox, oF wooDBRIDGE', CANADA.

ANT|FR|CT|ON'BEAR|NG'.

Specication of Letters Patent.

Patented Aug'. 1, 1905.

Application filed FebrnaryZO, 1905. `Serial Nn. 246,409.

.useful improvements in that class of antifriction-bearings in which thebearing-rollers are arranged in annular groups and maintained in theirannular formation by retaining-rings so arranged as to lprevent theirlongitudinal displacement under all conditions of motion and load; andthe object of lthe invention is to -employ two or more annular groups ofbearing-rollers, with a corresponding number of retaining-rings, and toso arrange such groupsV that the axes of the bearing-rollers of onegroup will be intermediate those of the other group or groups, s o thata continuous bearing-surface will be presented to the other bear- 'ingelements for the purposes, first', of relieving the bearing-rollers ofthe torsional strains caused by the impact ofthe load tangentiallyagainst them during the revolution of the bearing elements; second,1 byrelieving them of such tangential strains to minimize thefrictiongenerated by the contact of the hearing-rollers with the otherbearing elements. In carrying out this object it is necessary to employat least two groups of bearing-rollers; but as many more than two groupsof bearing-rollers may be employed as the size of the bearing demands.The bearing-rollers of each group are journaleda between retaining-ringswhich maintain them in their annular formation and prevent theirlongitudinal displacement, the rollers of one group being so arrangedthat their longitudinal axes will be intermediate the longitudinal vaxesof the adjoining group or groups, so that their bearing-surfaces will beopposedvto the intervals between the bearing-surfaces of the others,

the retaining-rings for each group of rollers being so spaced that therollers may creep longitudinally for a limited distance between -themunder the iniuence of their load, the

impact of the end thrust of the rollers being received and absorbed bythe retaining-rings, which are rigidly braced by the tie rods or boltsholding them together in cylindrical alinement, and the frictionalcontact of the rollerswith the retaining-rings being minimized by theconvexed ends with which the bearing-rollers are formed.

For a full understanding of the invention reference is to be had to thefollowing description and to the accompanying drawings, in which- Figurel is a perspective View of the bearing- -rollers, retaining-rings, andtie rods or bolts.

Fig. la is a similar view of a modification of the construction shown inFig. 1. Fig. 2 is a plan view of the construction shown in Fig. l. Fig.3 is a sectional view` takenl on the line a a, Fig. l, which passesthrough two. of

the bearing-spindles and the bearing elements with which thebearing-rollers contact; and

Fig. 4 is a similar view to Fig. 3, taken on the line b, Fig. l. l

Like letters of reference refer to like parts throughout thespecification and drawings.

For the-purpose of illustrating and explaining the purpose and principleof the present invention the antifriction-bearing is shown to consistvofthreeV annular groups of bearing- .,rollers, (lettered, respectively,an, b, and 0,)

maintained in their annular formation by four retaining-rings 0l, e,fand g, the retainingrings d and g being placed at the outer endsl ofthe bearing-rollers of the groups a and c and the retaining-rings e andf being placed betweenv the inner ends of the bearing-rollers of thegroups a and c and the adjacent ends ofthe bearing-rollers of the groupb, so that they will prevent the longitudinal displacement of thebearing-rollers in addition to maintaining the annular formation of. thegroups,` and fastening the retaining-rings together in cylindricalalignement are tie bolts or rods t'. The tie bolts or rods h haveshoulders't to engage the inner faces of the re-v bearing-rollersbinding during their revolution the distance between the retaining-ringsis slightly greater than the length of the bearing-rollers, so that thebearing-rollers may have a limited longitudinal movement between them inwhich they can creep in either direction under the iniiuence of the loadupon the bearing parts.

Owing tothe presence of the tie bolts or rods la, it is necessary tolongitudinally bore the bearing-rollers j of each group, so that the tierods or bolts may pass longitudinally through them, the diameters of thebores (not shown) of such bearing-rollers being suiciently greater thanthe diameters of the tie rods or bolts to avoid contact with them. rlhebearing-rollers Z of each group have similar bores r and are mounted onbearing-spindles m, similar to the tie-rods, this construction beingshown in Fig. l, or the bearingrollers Z of each group, as shown in Fig.4, may be provided with gudgeons o, mounted in bearings p in theretaining-rings.

As shown in the drawings, the longitudinal axes of the bearing-rollersof the group ct aline with those of the group c and the longitudinalaxes of the bearing-rollers of the group b are located intermediatethose of the groups a and c, so that the bearing-surfaces of thebearing-rollers of the group I) will be opposed to the intervals betweenthe bearingsurfaces of the bearing-rollers of the groups a and c topresent a continuous bearing-surface to the bearing elements q and r,with which the bearing-rollers are in contact, and to relieve thebearing-rollers of the tangential strains to which they would otherwisebe subjected, as the intervals between the bearing-rollers haveheretofore presented an opportunity for the bearing elements q and rtransmitting to the bearing-rollers the torsional strains o the loads.By presenting a continuous bearing-surface to the bearing elements thefrictional contact of the bearingrollers With these parts is not onlyminimized, but the wearing qualities of the parts are greatly increasedwithout a corresponding increase in the cost of the construction.

Although three annular groups of bearings have been shown and described,it is not desired to confine the invention to this number, as two groupsof bearing-rollers can be used for a smaller bearing or proportionatelymore for a larger one.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

An antifriction-bearing comprising two or more annular groups oflongitudinally-bored bearing-rollers, the bearing-rollers of one groupbeing opposed to the intervals between the bearing-rollers of theadjacent group or groups, retaining-rings interposed between theadjacent grou ps of bearing-rollers to maintain them in their annularformation, tie-rods for holding the retaining-rings in cylindricalalinement passing through the longitudinal bores of the bearing-rollersin their path and between the rims of the bearing-rollers of theadjacent group or groups and shoulders for the tie-rods to engage theretaining-rings for each group of bearing-rollers and hold them properlyspaced.

Toronto, December 8, A. D. 1904.

TOBIAS FOX.

In presence of- C. H. RICHEs, L. F. BROCK.

